Effects of elemental vaporization and condensation during heat treatment of single crystal superalloys
Research output: Contribution to journal › Article › peer-review
Authors
Colleges, School and Institutes
External organisations
- University of Oxford
- Rolls-Royce plc
- Loughborough University
- University of Birmingham
Abstract
Vaporization and subsequent condensation of Ni and Al is shown to play a dominant role in the evolution of microstructure during heat treatment of an Re-containing single crystal superalloy. Thus the traditional view that matter is not exchanged with the environment - so that the thermodynamic system is closed - is shown to be incorrect. The extent of depletion of Ni and Al alters the surface chemistry, causing formation of refractory-rich precipitates and destabilization of the matrix phase, γ.
Details
Original language | English |
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Pages (from-to) | 45-48 |
Number of pages | 4 |
Journal | Scripta Materialia |
Volume | 78-79 |
Publication status | Published - May 2014 |
Keywords
- Heat treatment, Homogenization/solutioning, Nickel alloys, Recrystallization, Surface evaporation